If its a book that you want, then perhaps a visit to a local library might be the answer. Amazon and eBay usually have a fair selection of books at good prices, but take into consideration the date the book was published, as components could have changed to much later specifications since the book was released.

With Amazon and eBay there might be reviews supplied by previous purchaser's, which can be very helpful on making any decisions. On Amazon, some of the books advertised have a facility to open and part read the book, which might give an insight to the actual books true contents.

If you are going to build for the first time, make sure that the components that you use are compatible with each other. It might even pay to look at a few 'bare-bones' units from the likes of Novatech, and see how their systems are configured.

It seems to me like you are trying to run before you can walk. Installing hardware is a fairly basic act of owning and using a PC. It's something that we all have to do eventually. Unless of course you prefer to pay someone else to do it for you. I got my knowledge of PC's from being hands on. Although it was more a matter of necessity, rather than desire. As in my case I couldn't afford to pay someone else to do it for me. If you don't mind me asking, How long have you been using a PC?